As humans, the only way to survive and thrive is through our relationships with other people. That means mattering to others is a survival instinct, almost as important as food and shelter. According to author Zach Mercurio, Ph.D, this instinct hasn’t disappeared in modern times. Even though we’re more likely swapping pet photos and project updates than hunting and gathering tips, we still need to feel like we matter to the people we live and work with. In his new book The Power of Mattering.